Radio Receivers
If a FET is used as the first AF amplifier in a transistor receiver, this will have the effect of

Reducing the effect of negative-peak clipping
Improving the effectiveness of the AGC
Improving the selectivity of the receiver
Reducing the effect of noise at low modulation depths

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Radio Receivers
Indicate the false statement in connection with communications receivers.

The noise limiter cuts off the receiver’s output during a noise pulse.
A product demodulator could be used for the reception of Morse code.
Variable sensitivity is used to eliminate selective fading
Double conversion is used to improve image rejection

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